component
TPS73718DCQR
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTPS73718DCQR
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-6
TPS73718DCQR from Texas Instruments, in a SOT-223-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IN | power_in | Unregulated input supply, which must be within 2.2 V to 5.5 V (absolute maximum -0.3 V to 6 V) for the regulator to operate. |
| 2 | OUT | power_out | Regulator output, which requires a capacitor of 1.0 µF or larger of any type for stability. |
| 3 | GND | power_in | Ground connection that must be tied to the ground plane, with bypass capacitor grounds connected directly to this pin. |
| 4 | NR/FB | passive | On the fixed-voltage version (TPS73718) this pin is NR, where an external capacitor from NR to ground bypasses the internal bandgap noise and lowers output noise; the FB function applies only to the adjustable version. |
| 5 | EN | input | Enable input where driving above 1.7 V turns the regulator on and driving below 0.5 V places it in shutdown, and it must not be left floating (it may be tied to IN if shutdown is not needed). |
| 6 | GND | power_in | Ground pin in the SOT-223 package that is internally tied with pin 3, and the package tab is also GND and must be connected to ground. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage range | VIN | 2.2 | 5.5 | V | 6 | ||
| Internal reference (DCQ package) | VFB | 1.198 | 1.204 | 1.21 | V | TJ = 25°C | 6 |
| Initial accuracy | -1 | 1 | % | Nominal value, TJ = 25°C | 6 | ||
| Output accuracy over line, load and temperature (new device) | -1.5 | 0.5 | 1.5 | % | VOUT + 0.5V ≤ VIN ≤ 5.5V; 10mA ≤ IOUT ≤ 1A; new device; TJ = -40°C to 125°C | 6 | |
| Output accuracy over line, load and temperature (legacy device) | -3 | 0.5 | 3 | % | VOUT + 0.5V ≤ VIN ≤ 5.5V; 10mA ≤ IOUT ≤ 1A; legacy device; TJ = -40°C to 125°C | 6 | |
| Dropout voltage (legacy device) | VDO | 130 | 500 | mV | VIN = VOUT(nom) - 0.1V, IOUT = 1A, legacy device | 6 | |
| Dropout voltage (new device) | VDO | 122 | 250 | mV | VIN = VOUT(nom) - 0.1V, IOUT = 1A, new device | 6 | |
| Output current limit | ICL | 1.05 | 1.6 | 2.2 | A | VOUT = 0.9 × VOUT(nom) | 6 |
| EN pin high (enabled) | VEN(high) | 1.7 | V | Enabled; maximum printed as VIN | 6 | ||
| EN pin low (shutdown) | VEN(low) | 0 | 0.5 | V | Shutdown | 6 | |
| Operating junction temperature | TJ | -40 | 125 | °C | 6 | ||
| Junction-to-ambient thermal resistance (DCQ) | RθJA | 53.1 | °C/W | JEDEC high-K board, natural convection | 5 | ||
| Junction-to-case (top) thermal resistance (DCQ) | RθJC(top) | 35.2 | °C/W | 5 | |||
| Junction-to-board thermal resistance (DCQ) | RθJB | 7.8 | °C/W | 5 | |||
| Junction-to-top characterization parameter (DCQ) | ψJT | 2.9 | °C/W | 5 | |||
| Junction-to-board characterization parameter (DCQ) | ψJB | 7.7 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
TPS73718DCQR - Footprint:
Package_TO_SOT_SMD:SOT-223-6 - 3D model: SOT-223-6 (KiCad packages3D, STEP)
- 3D model files:
tps73718dcqr-etched.step/tps73718dcqr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps73718dcqr.step/tps73718dcqr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (50 pp, sha256
c0519949d941865c, retrieved 2026-10-11, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).